For one-axle trailers, the hitch height and transverse position shall be adjusted [DEL]  in order to avoid any disturbance of the measuring results [DEL].

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For one axle trailers, the hitch height and transverse position shall be adjusted once the test tyre has been loaded to the specified test load in order to avoid any disturbance of the measuring results. The longitudinal distance from the centre line of the articulation point of the coupling to the transverse centre line of the axle of the trailer shall be at least ten times the "hitch height" or the "coupling (hitch) height". a0c0